Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Chapter 3: Derivatives - Section 3.9 - Linearization and Differentials - Exercises 3.9 - Page 174: 11

Answer

$L(x)=\frac{1}{12}x+\frac{4}{3}$

Work Step by Step

Step 1. $f(x)=\sqrt[3] x=x^{1/3}$, $f'(x)=\frac{1}{3}x^{-2/3}$, Step 2. Choose $x=8$, $f(8)=2$, $f'(8)=\frac{1}{3}8^{-2/3}=\frac{1}{12}$, Step 3. The linearization at $x=8$ is $L(x)=f(8)+f'(8)(x-8)=2+\frac{1}{12}(x-8)=\frac{1}{12}x+\frac{4}{3}$
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